A man that is unsure what to do next, yet willing to do it, whatever it may be. Usually a man that is waiting for direction from a woman because he is under the delusion that he will get a lifetime of pussy for being there for her, whenever, where ever...essentially missing the point of being a man.

Dave opened the car door and said, "sorry honey, I couldn't get over here faster, I had to first put the car in park, then shut it off, unbuckle my seat-belt then open my door and I could only run so fast to get to you. So sorry. Where do you want to eat honey?"

Karen, (thinking--"Shut the fuck up already you Beta Male") stewing, then says, "I told you I wanted Mexican, how many times do I have to tell you?"

A totally typical male. Most definitions here are wrong: betas aren't particularly sensitive or even meek, they just are much more follower than leader.

Plenty of insecure, pushy, loud guys are betas: most frat boys (especially the toady), most Ivy Leaguers, most football players, most Tea Partiers, most suburbanites, most rednecks, etc. Since they 1) don't have followers they aren't alphas and 2) don't have much of a mind of their own aren't gammas.

Steve thought being pushy and obnoxious made him seem like an alpha male. He couldn't be more wrong. Since no one gives a shit what he thinks and he's always following what Glenn Beck says, he's pretty clearly just an another beta male

A beta male would be the exact opposite of an Alpha male. First, notice that beta male isn't capitalized like Alpha male, and that is for a reason. beta males are plagued with anxiety, insecurity, and are all around dominated by their peers. beta males are unlikely to ever find success, mostly due to their lack of confidence and insufficient sexual demeanor.

Woman: "That beta male couldn't even keep his dick up for thirty seconds, I need an alpha that could keep it as hard as steel."